CN103721972A - Method for wetting polymer lithium ion batteries - Google Patents

Method for wetting polymer lithium ion batteries Download PDF

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Publication number
CN103721972A
CN103721972A CN201310736734.1A CN201310736734A CN103721972A CN 103721972 A CN103721972 A CN 103721972A CN 201310736734 A CN201310736734 A CN 201310736734A CN 103721972 A CN103721972 A CN 103721972A
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CN
China
Prior art keywords
batteries
wetting
battery
pure water
ultrasonic
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Pending
Application number
CN201310736734.1A
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Chinese (zh)
Inventor
王硕
赵磊
贾学恒
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Tianjin Lishen Battery JSCL
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Tianjin Lishen Battery JSCL
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Priority to CN201310736734.1A priority Critical patent/CN103721972A/en
Publication of CN103721972A publication Critical patent/CN103721972A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

The invention belongs to the field of technologies for wetting batteries, and relates to a method for wetting polymer lithium ion batteries. The method is used for wetting the polymer lithium ion batteries by the aid of an ultrasonic cleaning device. The method particularly includes steps of enabling battery air bags filled with liquid to upwardly and vertically stand in a water tank of the ultrasonic cleaning device; filling pure water into the water tank and submerging pole groups of the batteries in the surface of the pure water under the control; heating the pure water under the control to enable the temperature of the pure water to range from 23 DEG C to 27 DEG C, enabling the frequencies of ultrasonic waves to range from 50KHz to 70KHz under the control, and ultrasonically wetting the polymer lithium ion batteries for 1.0-2.0 hours; taking the wetted batteries out of the water tank and drying the batteries by a hot air device. The method for ultrasonically wetting the polymer lithium ion batteries has the advantages that diffusion of organic electrolyte inside the batteries, particularly in gaps among pole pieces and diaphragms of the batteries, can be promoted by the aid of ultrasonic oscillation, wetting the insides, particularly the gaps among the pole pieces and the diaphragms, of the batteries by the organic electrolyte can be promoted by the aid of ultrasonic oscillation, accordingly, the standing time can be greatly shortened, and production energy consumption can be reduced; an effect which is identical to an effect realized by a conventional method for wetting polymer lithium ion batteries at high temperatures can be realized, the production cost can be reduced, and the production efficiency can be improved; the method is high in practicality and is applicable to wetting various models of batteries.

Description

A kind of wetting method of polymer Li-ion battery
Technical field
The invention belongs to battery and infiltrate technical field, be specifically related to a kind of wetting method of polymer Li-ion battery.
Background technology
Battery is after fluid injection, and electrolyte is not to be immersed in completely rapidly utmost point group inside, and part electrolyte is concentrated in utmost point group top airbag space partly, and the time of repose that these electrolyte need to be very long could abundant infiltration arrive utmost point group inside.Therefore, in lithium ion polymer battery industry, battery is often repaiied the quiescence in high temperature of wanting the long period after fluid injection, guarantees that electrolyte has carried out sufficient infiltration to battery.This process has increased energy consumption, has also wasted the time, is unfavorable for reducing costs and enhancing productivity.
Along with the continuous pursuit of people to polymer Li-ion battery energy density, battery pole piece compacted density also improves constantly; In order to improve flatness and the security of polymer battery, diaphragms can apply a large amount of Al again simultaneously 2o 3and PVDF.These variations have all reduced the porosity of pole piece and the porosity of barrier film virtually, thereby have also reduced the wetting velocity of electrolyte in utmost point group inside.Therefore, polymer Li-ion battery standing 2-3 days at high temperature often after fluid injection.
Shown in Figure 1, in this figure, 11 is battery, and 10 is electrolyte syringe needle, and 12 for electrolyte infiltrates direction, and 13 is the region having infiltrated at first in impregnation process.As can be seen from the figure, electrolyte, from syringe needle 10 ejections, can flow from trend battery 11 both sides, first battery 11 both sides are infiltrated, form region shown in 13, then along with the carrying out of standing process, electrolyte is spread in the middle of battery by battery both sides gradually, the final traversal whole 11 that infiltrates.
Shown in Figure 2, during this figure has shown that battery is standing after fluid injection, the process that electrolyte infiltrates therein.In figure, 21 is collector Al paper tinsel, and 22 is collector Cu paper tinsel, and 23 is barrier film; Between barrier film 23 and Al paper tinsel 21, be positive active material 24, comprise positive mix, conductive agent and binding agent; Between barrier film 23 and Cu paper tinsel 22, be negative electrode active material 25, comprise negative pole powder, conductive agent and binding agent; Barrier film 23 zone lines 26 are barrier film micropore, and arrow 27 is electrolyte infiltration directions in pole piece.From this figure, clearly to find out, electrolyte is in standing process, and from pole piece top layer, (barrier film one side) infiltrates gradually to internal layer (collector one side).
In the process infiltrating at electrolyte, can run into both positive and negative polarity active material particle, these active material particles have certain distance each other.In figure, the particle in the region 28 of circle delineation distance is each other larger, that is to say that the pole piece porosity in this region is larger, so electrolyte when flowing through herein just than being easier to infiltrate (react be in the drawings exactly in region arrow many); On the contrary, in figure, the particle in the region 29 of circle delineation distance is each other very little, it is the pole piece porosity in this region, electrolyte just more difficult infiltration when flowing through herein so (in the drawings reaction be exactly in this region arrow fewer), this just needs the quiescence in high temperature of long period, and electrolyte is all difficult to fully infiltrate between active material particle so even in time.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above and a kind of wetting method of polymer Li-ion battery is provided.
The present invention is achieved in that a kind of wetting method of polymer Li-ion battery, adopts ultrasonic cleaning equipment to infiltrate, and specifically comprises the following steps:
Battery airbag after fluid injection is vertically stood in the tank of ultrasonic cleaning equipment upward;
In described tank, inject pure water, the liquid level of controlling described pure water did not have the utmost point group of described battery;
Heat described pure water and control temperature at 23-27 ℃, control ultrasonic frequency at 50-70KHz, ultrasonic infiltration 1.0-2.0 hour;
The battery that infiltration is completed takes out with hot air apparatus dry.
Preferably, described pure water temperature is 25 ℃, and described hyperacoustic frequency is 60KHz.
Preferably, the 1.5 hours time of described ultrasonic infiltration.
The present invention is by adopting ultrasonic wetting method, by sonic oscillation, promote organic electrolyte as inside battery, especially diffusion and the infiltration in pole piece and barrier film space, can significantly shorten time of repose and reduce energy consumption, and reach the effect same infiltrating with conventional polymer high-temperature lithium ion battery, reduced production cost, improved production efficiency; Practical, the battery that goes for Multiple Type infiltrates.
Accompanying drawing explanation
Figure 1 shows that polymer Li-ion battery fluid injection and the electrolyte infiltration schematic diagram after fluid injection;
Figure 2 shows that the profile for lithium ion battery;
Figure 3 shows that the placement schematic diagram of battery in ultrasonic cleaning equipment;
Figure 4 shows that after battery that different pattern of invasion obtain and fluid injection the EIS electrochemical impedance spectroscopy without the battery of infiltration.
The specific embodiment
Below, in conjunction with example, substantive distinguishing features of the present invention and advantage are further described, but the present invention is not limited to listed embodiment.
A wetting method for polymer Li-ion battery, adopts ultrasonic cleaning equipment to infiltrate, and specifically comprises the following steps:
Battery airbag after fluid injection is vertically stood in the tank of ultrasonic cleaning equipment upward;
In described tank, inject pure water, the liquid level of controlling described pure water did not have the utmost point group of described battery;
Heat described pure water and control temperature at 23-27 ℃, control ultrasonic frequency at 50-70KHz, ultrasonic infiltration 1.0-2.0 hour;
The battery that infiltration is completed takes out with hot air apparatus dry.
Preferably, described pure water temperature is 25 ℃, and described hyperacoustic frequency is 60KHz.
Preferably, the 1.5 hours time of described ultrasonic infiltration.
The present invention is after battery liquid-filling, battery does not proceed to standing between high temperature but adopts sonic oscillation instrument to infiltrate battery at normal temperature, by sonic oscillation, promote organic electrolyte as inside battery, especially diffusion and the infiltration in pole piece and barrier film space, effectively shortened battery quiescent time, reduced energy consumption and improved production efficiency.
Described ultrasonic cleaning equipment can adopt existing ultrasonic concussion cleaning device,
During use, by the three core power supplys of ultrasonic rocking equipment access 220V/50Hz, battery after fluid injection 4 is put into the tank 30 of ultrasonic cleaning equipment, and the airbag of battery 4 vertically stands in tank 30 and (in this tank 30, has outage 31, communicate with discharging tube 32) upward; In tank, inject pure water simultaneously; By the power control panel 33 of ultrasonic concussion cleaning device, connected ultrasonic concussion cleaning device power supply, by the heater switch heating pure water of heating control panel 34, and design temperature is controlled at 23-27 ℃; By ultrasonic control panel 36, start ultrasonic concussion, and to control hyperacoustic frequency be between 50-70KHz, under this operating mode, the time of setting the described battery of infiltration by infiltrating time control panel 35 infiltrated at 1.0-2.0 hour, infiltration completes, battery takes out with hot air apparatus dry, has completed the infiltration of battery.
Test comparison:
To just having noted the polymer Li-ion battery of electrolyte, proceed as follows:
Get 3 batteries 1,2,3 after just fluid injection, with EIS electrochemical impedance tester, carry out the test of EIS electrochemical impedance, test amplitude is 5mV/s, and barcode scanning frequency is from 10mHz to 100KHz.
Get 3 batteries, adopt conventional batteries high temperature to infiltrate technique, at high temperature standing 2-3 days, forms the battery 1,2,3 after high temperature infiltrates;
Get 3 batteries and put into the tank of ultrasonic cleaning equipment shown in Fig. 3, then in tank, inject pure water, the liquid level of controlling pure water had not just had the utmost point group of battery, carried out as stated above ultrasonic infiltration, obtained the battery 1,2,3 after ultrasonic infiltration.
The battery 1,2,3 that described high temperature is infiltrated and the battery 1,2,3 of ultrasonic infiltration carry out same EIS electrochemical impedance test, then compare and analyze the difference that battery infiltrates front and back and two kinds of pattern of invasion ohmic resistances.
As shown in Figure 4, the representative of the lines of triangular marker is the EIS impedance spectrum of battery 1,2,3 after just fluid injection; What the lines of square marks represented is the EIS impedance spectrum of battery 1,2,3 after high temperature infiltrates; Diamond indicia be lines representatives be the EIS impedance spectrum of battery 1,2,3 after ultrasonic infiltration.(Z ") (imaginary part of impedance) is the ohmage that the intersection value of the straight line of 0 o'clock represents battery to Re in curve and figure.
Can find, battery has just been noted the battery of liquid before the ohmage after infiltrating will be significantly less than infiltration; In addition, the ohmage of ultrasonic infiltration and high temperature infiltration battery is almost as broad as long, can think that ultrasonic infiltration has reached the effect that high temperature infiltrates too.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (3)

1. a wetting method for polymer Li-ion battery, is characterized in that, adopts ultrasonic cleaning equipment to infiltrate, and specifically comprises the following steps:
Battery airbag after fluid injection is vertically stood in the tank of ultrasonic cleaning equipment upward;
In described tank, inject pure water, the liquid level of controlling described pure water did not have the utmost point group of described battery;
Heat described pure water and control temperature at 23-27 ℃, control ultrasonic frequency at 50～70KHz, ultrasonic infiltration 1.0-2.0 hour;
The battery that infiltration is completed takes out with hot air apparatus dry.
2. the wetting method of polymer Li-ion battery according to claim 1, is characterized in that, described pure water temperature is 25 ℃, and described hyperacoustic frequency is 60KHz.
3. according to the wetting method of polymer Li-ion battery described in claim 1 or 2, it is characterized in that the 1.5 hours time of described ultrasonic infiltration.
CN201310736734.1A 2013-12-20 2013-12-20 Method for wetting polymer lithium ion batteries Pending CN103721972A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505251A (en) * 2016-12-07 2017-03-15 珠海光宇电池有限公司 The aging method of polymer lithium ion battery cell
CN107546419A (en) * 2017-08-02 2018-01-05 天津市捷威动力工业有限公司 Method is shelved after a kind of Soft Roll lamination lithium-ion-power cell fluid injection
CN107579196A (en) * 2017-08-15 2018-01-12 中银（宁波）电池有限公司 Battery electrolyte ultrasonic wave injection device and method
CN109899666A (en) * 2019-03-06 2019-06-18 上海工程技术大学 A kind of piece surface infiltration treatment process and device
CN111344889A (en) * 2018-03-26 2020-06-26 株式会社Lg化学 Method for manufacturing pouch type secondary battery
CN112242566A (en) * 2020-11-09 2021-01-19 东莞维科电池有限公司 Infiltration method of lithium ion battery
CN112952182A (en) * 2021-01-26 2021-06-11 宜春清陶能源科技有限公司 Battery standing system and method
CN113437345A (en) * 2021-05-12 2021-09-24 宜春清陶能源科技有限公司 Battery rest system and method
CN113921892A (en) * 2021-09-16 2022-01-11 江苏中兴派能电池有限公司 Lithium ion battery electrolyte infiltration judgment method
CN113948776A (en) * 2021-07-27 2022-01-18 宁波维科电池有限公司 Method for improving battery cell infiltration efficiency
CN114156544A (en) * 2021-12-02 2022-03-08 天津市捷威动力工业有限公司 Method for rapidly determining battery core infiltration time

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CN101673785A (en) * 2009-09-25 2010-03-17 上海大学 Method for preparing reflection reduction film with surface embedded type porous silicon structure of silicon base solar battery
CN101692487A (en) * 2009-09-28 2010-04-07 新源动力股份有限公司 Method for preparing low-permeability proton exchange membrane for fuel cell
JP2010282822A (en) * 2009-06-04 2010-12-16 Hitachi Vehicle Energy Ltd Sealed battery and method of manufacturing the same
CN102364701A (en) * 2011-10-27 2012-02-29 中国科学院苏州纳米技术与纳米仿生研究所 Manufacturing process of solar battery surface electrode
CN103378372A (en) * 2012-04-28 2013-10-30 深圳拓邦股份有限公司 Method for placing and aging lithium ion battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010282822A (en) * 2009-06-04 2010-12-16 Hitachi Vehicle Energy Ltd Sealed battery and method of manufacturing the same
CN101673785A (en) * 2009-09-25 2010-03-17 上海大学 Method for preparing reflection reduction film with surface embedded type porous silicon structure of silicon base solar battery
CN101692487A (en) * 2009-09-28 2010-04-07 新源动力股份有限公司 Method for preparing low-permeability proton exchange membrane for fuel cell
CN102364701A (en) * 2011-10-27 2012-02-29 中国科学院苏州纳米技术与纳米仿生研究所 Manufacturing process of solar battery surface electrode
CN103378372A (en) * 2012-04-28 2013-10-30 深圳拓邦股份有限公司 Method for placing and aging lithium ion battery

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505251A (en) * 2016-12-07 2017-03-15 珠海光宇电池有限公司 The aging method of polymer lithium ion battery cell
CN107546419A (en) * 2017-08-02 2018-01-05 天津市捷威动力工业有限公司 Method is shelved after a kind of Soft Roll lamination lithium-ion-power cell fluid injection
CN107579196A (en) * 2017-08-15 2018-01-12 中银（宁波）电池有限公司 Battery electrolyte ultrasonic wave injection device and method
CN111344889A (en) * 2018-03-26 2020-06-26 株式会社Lg化学 Method for manufacturing pouch type secondary battery
CN109899666B (en) * 2019-03-06 2024-04-16 上海工程技术大学 Part surface infiltration treatment process and device
CN109899666A (en) * 2019-03-06 2019-06-18 上海工程技术大学 A kind of piece surface infiltration treatment process and device
CN112242566A (en) * 2020-11-09 2021-01-19 东莞维科电池有限公司 Infiltration method of lithium ion battery
CN112952182A (en) * 2021-01-26 2021-06-11 宜春清陶能源科技有限公司 Battery standing system and method
CN112952182B (en) * 2021-01-26 2023-01-31 宜春清陶能源科技有限公司 Battery standing system and method
CN113437345B (en) * 2021-05-12 2023-03-24 宜春清陶能源科技有限公司 Battery rest system and method
CN113437345A (en) * 2021-05-12 2021-09-24 宜春清陶能源科技有限公司 Battery rest system and method
CN113948776A (en) * 2021-07-27 2022-01-18 宁波维科电池有限公司 Method for improving battery cell infiltration efficiency
CN113948776B (en) * 2021-07-27 2024-05-17 宁波维科电池有限公司 Method for improving infiltration efficiency of battery cell
CN113921892A (en) * 2021-09-16 2022-01-11 江苏中兴派能电池有限公司 Lithium ion battery electrolyte infiltration judgment method
CN114156544A (en) * 2021-12-02 2022-03-08 天津市捷威动力工业有限公司 Method for rapidly determining battery core infiltration time

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Application publication date: 20140416